public class Circle {
    int innerRadius;
    int outerRadius;
    Circle circle = new Circle();
    public Circle(int innerRadius, int outerRadius) {
        this.innerRadius = innerRadius;
        this.outerRadius = outerRadius;
    }

    public void setInnerRadius(int innerRadius) {
        this.innerRadius = innerRadius;
    }

    public Circle() {
        this(3,1);
    }

    public void setOuterRadius(int outerRadius) {
        this.outerRadius = outerRadius;
    }

    public int getInnerRadius() {
        return innerRadius;
    }

    public int getOuterRadius() {
        return outerRadius;
    }
}
